干旱区生态环境知识资源中心(Arid): 石羊河流域近50a来水资源变化的定量分析

Arid

	石羊河流域近50a来水资源变化的定量分析
其他题名	Quantitative analysis of water resources variation for Shiyang River Basin for recent 50 years
	李相虎 1; 赵鑫 1; 任立良 2
ISSN	1000-1980
出版年	2007
卷号	35 期号:2 页码:164-167
中文摘要	利用主成分回归分析法,选取石羊河流域的5个影响因素进行定量分析,得到3个主成分,其累计方差贡献率达92.786%.根据3个主成分各自对应的特征向量特点,分别解释为人为因子、温度因子和降水因子并进行回归分析.根据回归方程,近50a来人为因子在水资源变化过程中起主导负作用,其影响力占总影响力的-58.48%,大大超过了降水因子22.35%的正作用;而温度因子虽其影响力不是很大,只占总影响力的-19.17%,却加剧了水资源进一步减少的趋势.
英文摘要	Shiyang River Basin is a typical fragile zone of water resources in arid regions. Long-term natural evolution and human activities have seriously destroyed the balance of the water cyclic system of this region. By use of the principal component regression analysis, 5 influencing factors were quantitatively analyzed, and 3 principal components with the accumulative variance contribution rate 92.786% were obtained. According to the corresponding eigenvectors, the 3 principal components were explained as the anthropogenic factor, the temperature factor, and the precipitation factor. The regression analysis shows that the anthropogenic factor plays a leading negative role in water resources variation in recent 50 years, and its effect accounts for -58.48% of the total effect, which is much greater than the positive effect of the precipitation factor with the effect accounting for 22.35%. It is also demonstrated that, although the effect of the temperature factor only accounts for -19.17% , it accelerates the decrease of water resources.
中文关键词	主成分回归 ; 气候变化 ; 石羊河流域
英文关键词	principal component regression climate variation Shiyang River Basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENGINEERING MULTIDISCIPLINARY
WOS研究方向	Engineering
CSCD记录号	CSCD:2787121
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221149
作者单位	1.兰州大学, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国; 2.河海大学, 水文水资源与水利工程科学国家重点实验室, 南京, 江苏 210098, 中国
推荐引用方式 GB/T 7714	李相虎,赵鑫,任立良. 石羊河流域近50a来水资源变化的定量分析[J]. 兰州大学,2007,35(2):164-167.
APA	李相虎,赵鑫,&任立良.(2007).石羊河流域近50a来水资源变化的定量分析.,35(2),164-167.
MLA	李相虎,et al."石羊河流域近50a来水资源变化的定量分析".35.2(2007):164-167.